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Schedule II
 12 Months Ended
Dec. 31, 2012
Valuation and Qualifying Accounts [Abstract]  
Valuation and Qualifying Accounts
 
 
Additions
 
 
Description (amounts in millions)
Balance, Beginning Of Year
Charged to Costs/Expenses
Charged to Other Accounts
Deductions (a)
Balance, End of Year
Year ended December 31, 2012:
 
 
 
 
Deducted from asset account:
 
 
 
 
Allowance for uncollectible accounts
$
12.0

$
9.4

$
—

$
(11.6
)
$
9.8

Added to liability account:
 
 
 
 
Claims and insurance accruals
$
500.7

$
181.9

$
—

$
(245.3
)
$
437.3

 
 
 
 
 
Year ended December 31, 2011:
 
 
 
 
Deducted from asset account:
 
 
 
 
Allowance for uncollectible accounts
$
14.5

$
13.2

$
—

$
(15.7
)
$
12.0

Added to liability account:
 
 
 
 
Claims and insurance accruals
$
515.2

$
240.6

$
—

$
(255.1
)
$
500.7

 
 
 
 
 
Year ended December 31, 2010:
 
 
 
 
Deducted from asset account:
 
 
 
 
Allowance for uncollectible accounts
$
36.1

$
3.4

$
—

$
(25.0
)
$
14.5

Added to liability account:
 
 
 
 
Claims and insurance accruals
$
536.8

$
237.8

$
—

$
(259.4
)
$
515.2

(a) Regarding the allowance for uncollectible accounts, deductions primarily relate to uncollectible accounts written off, net of recoveries and the disposition of Logistics. For the claims and insurance accruals, deductions primarily relate to payments of claims and insurance.